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Zhong Y, Zheng W, Shi X, Guo Y, Wang Q, Lv P, Chen J. Pilot-Scale Fermentation of Pseudoalteromonas sp. Strain FDHY-MZ2: An Effective Strategy for Increasing Algicidal Activity. BIOLOGY 2023; 12:1447. [PMID: 37998046 PMCID: PMC10669318 DOI: 10.3390/biology12111447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
The role of microorganisms in effectively terminating harmful algal blooms (HABs) is crucial for maintaining environmental stability. Recent studies have placed increased emphasis on bio-agents capable of inhibiting HABs. The bacterium Pseudoalteromonas sp. strain FDHY-MZ2 has exhibited impressive algicidal abilities against Karenia mikimotoi, a notorious global HAB-forming species. To augment this capability, cultures were progressively scaled from shake flask conditions to small-scale (5 L) and pilot-scale (50 L) fermentation. By employing a specifically tailored culture medium (2216E basal medium with 1.5% soluble starch and 0.5% peptone), under precise conditions (66 h, 20 °C, 450 rpm, 30 L/min ventilation, 3% seeding, and constant starch flow), a notable increase in algicidal bacterial biomass was observed; the bacterial dosage required to entirely wipe out K. mikimotoi within a day decreased from 1% to 0.025%. Compared to an unoptimized shake flask group, the optimized fermentation culture caused significant reductions in algal chlorophyll and protein levels (21.85% and 78.3%, respectively). Co-culturing induced increases in algal malondialdehyde and H2O2 by 5.98 and 5.38 times, respectively, leading to further disruption of algal photosynthesis. This study underscores the unexplored potential of systematically utilized microbial agents in mitigating HABs, providing a pathway for their wider application.
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Affiliation(s)
- Yuying Zhong
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
- College of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China
| | - Wenhuang Zheng
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Xinguo Shi
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Yisong Guo
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
| | - Qianqian Wang
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
- College of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China
| | - Pin Lv
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
- College of Advanced Manufacturing, Fuzhou University, Jinjiang 362200, China
| | - Jianfeng Chen
- Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China; (Y.Z.); (W.Z.); (Y.G.); (Q.W.); (P.L.)
- Fujian Engineering and Technology Research Center for Comprehensive Utilization of Marine Products Waste, Fuzhou University, Fuzhou 350108, China
- Fuzhou Industrial Technology Innovation Center for High Value Utilization of Marine Products, Fuzhou University, Fuzhou 350108, China
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2
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Journey of the Probiotic Bacteria: Survival of the Fittest. Microorganisms 2022; 11:microorganisms11010095. [PMID: 36677387 PMCID: PMC9861974 DOI: 10.3390/microorganisms11010095] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
This review aims to bring a more general view of the technological and biological challenges regarding production and use of probiotic bacteria in promoting human health. After a brief description of the current concepts, the challenges for the production at an industrial level are presented from the physiology of the central metabolism to the ability to face the main forms of stress in the industrial process. Once produced, these cells are processed to be commercialized in suspension or dried forms or added to food matrices. At this stage, the maintenance of cell viability and vitality is of paramount for the quality of the product. Powder products requires the development of strategies that ensure the integrity of components and cellular functions that allow complete recovery of cells at the time of consumption. Finally, once consumed, probiotic cells must face a very powerful set of physicochemical mechanisms within the body, which include enzymes, antibacterial molecules and sudden changes in pH. Understanding the action of these agents and the induction of cellular tolerance mechanisms is fundamental for the selection of increasingly efficient strains in order to survive from production to colonization of the intestinal tract and to promote the desired health benefits.
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3
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Deb S. Pan-genome evolution and its association with divergence of metabolic functions in Bifidobacterium genus. World J Microbiol Biotechnol 2022; 38:231. [PMID: 36205822 DOI: 10.1007/s11274-022-03430-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 09/30/2022] [Indexed: 10/10/2022]
Abstract
Previous studies were mainly focused on genomic evolution and diversity of type species of Bifidobacterium genus due to their health-promoting effect on host. However, those studies were mainly based on species-level taxonomic resolution, adaptation, and characterization of carbohydrate metabolic features of the bifidobacterial species. Here, a comprehensive analysis of the type strain genome unveils the association of pan-genome evolution with the divergence of metabolic function of the Bifidobacterium genus. This study has also demonstrated that horizontal gene transfer, as well as genome expansion and reduction events, leads to the divergence of metabolic functions in Bifidobacterium genus. Furthermore, the genome-based search of probiotic traits among all the available bifidobacterial type strains gives hints on type species, that could confer health benefits to nutrient-deficient individuals. Altogether, the present study provides insight into the developments of genomic evolution, functional divergence, and potential probiotic type species of the Bifidobacterium genus.
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Affiliation(s)
- Sushanta Deb
- Department of Molecular Biology and Bioinformatics, Tripura University, Suryamaninagar, 799022, Tripura, India. .,All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India.
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4
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Oh YJ, Kim SA, Yang SH, Kim DH, Cheng YY, Kang JI, Lee SY, Han NS. Integrated genome-based assessment of safety and probiotic characteristics of Lactiplantibacillus plantarum PMO 08 isolated from kimchi. PLoS One 2022; 17:e0273986. [PMID: 36190947 PMCID: PMC9529155 DOI: 10.1371/journal.pone.0273986] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 08/19/2022] [Indexed: 11/18/2022] Open
Abstract
Lactiplantibacillus plantarum PMO 08 has been used as a probiotic starter culture for plant-based fermented beverages, with various health-promoting effects such as cholesterol-lowering and anti-inflammatory activities. This study aimed to analyze the genome sequence of Lp. plantarum PMO 08 and identify its safety and probiotic characteristics at the genomic level. For this, complete genome sequencing was conducted to investigate the genes associated with risk and probiotic characteristics by using Pacbio combined with Illumina HiSeq. This bacterial strain has one circular chromosome of 3,247,789 bp with 44.5% G + C content and two plasmids of 50,296 bp with 39.0% G + C content and 19,592 bp with 40.5% G + C content. Orthologous average nucleotide identity analysis showed that PMO 08 belongs to the Lp. plantarum group with 99.14% similarity to Lp. plantarum WCFS1. No deleterious genes were determined in the virulence factor analysis, and no hemolysin activity or secondary bile salt synthesis were detected in vitro test. In the case of antibiotic resistance analysis, PMO 08 was resistant to ampicillin in vitro test, but these genes were not transferable. In addition, the strain showed same carbohydrate utilization with Lp. plantarum WCFS1, except for mannopyranoside, which only our strain can metabolize. The strain also harbors a gene for inositol monophosphatase family protein related with phytate hydrolysis and have several genes for metabolizing various carbohydrate which were rich in plant environment. Furthermore, in probiotic characteristics several genes involved in phenotypes such as acid/bile tolerance, adhesion ability, and oxidative stress response were detected in genome analysis. This study demonstrates that Lp. plantarum PMO 08 harbors several probiotic-related genes (with no deleterious genes) and is a suitable probiotic starter for plant-based fermentation.
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Affiliation(s)
| | - Seul-Ah Kim
- Brain Korea 21 Center for Bio-Health Industry, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Soo Hwi Yang
- Brain Korea 21 Center for Bio-Health Industry, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Da Hye Kim
- Brain Korea 21 Center for Bio-Health Industry, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Ya-Yun Cheng
- Brain Korea 21 Center for Bio-Health Industry, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | | | | | - Nam Soo Han
- Brain Korea 21 Center for Bio-Health Industry, Division of Animal, Horticultural, and Food Sciences, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
- * E-mail:
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5
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Sugajski M, Maślak E, Złoch M, Rafińska K, Pomastowski P, Białczak D, Buszewski B. New sources of lactic acid bacteria with potential antibacterial properties. Arch Microbiol 2022; 204:349. [PMID: 35616812 DOI: 10.1007/s00203-022-02956-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 11/29/2022]
Abstract
In the face of the growing demand for functional food, the search for new sources of lactic acid bacteria (LAB) becomes a priority. In our research, we used multiplied culture conditions followed by identification via the matrix-assisted laser desorption ionization-time of flight mass spectrometry for seeking LAB strains in plant- and animal-derived sources. Furthermore, the selected LAB isolates were examined for their proteolytic activity as well as antimicrobial action against different bacterial pathogens. The applied method appeared to be useful tool for searching LAB strains within different types of the biological matrices. The best source of the LABs was from calf. Comparing properties of the two selected LABs, those isolated from calf demonstrated the greatest proteolytic and antibacterial properties suggesting that gastrointestinal microbiota are the most valuable LAB source. Nevertheless, second selected strain derived from pickled cucumber juice may be also treated as a promising source of potential probiotic strains.
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Affiliation(s)
- Mateusz Sugajski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str, 87-100, Toruń, Poland
| | - Ewelina Maślak
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str, 87-100, Toruń, Poland.,Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100, Toruń, Poland
| | - Michał Złoch
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str, 87-100, Toruń, Poland. .,Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100, Toruń, Poland.
| | - Katarzyna Rafińska
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100, Toruń, Poland
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str, 87-100, Toruń, Poland
| | - Dorota Białczak
- Polmlek Grudziądz Sp. z o. o, Magazynowa 8, 86-302, Grudziądz, Poland
| | - Bogusław Buszewski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str, 87-100, Toruń, Poland.,Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100, Toruń, Poland
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6
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Surve S, Shinde DB, Kulkarni R. Isolation, characterization and comparative genomics of potentially probiotic Lactiplantibacillus plantarum strains from Indian foods. Sci Rep 2022; 12:1940. [PMID: 35121802 PMCID: PMC8816928 DOI: 10.1038/s41598-022-05850-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/18/2022] [Indexed: 01/11/2023] Open
Abstract
Lactiplantibacillus plantarum is one of the most diverse species of lactic acid bacteria found in various habitats. The aim of this work was to perform preliminary phenotypic and genomic characterization of two novel and potentially probiotic L. plantarum strains isolated from Indian foods, viz., dhokla batter and jaggery. Both the strains were bile and acid tolerant, utilized various sugars, adhered to intestinal epithelial cells, produced exopolysaccharides and folate, were susceptible for tetracycline, erythromycin, and chloramphenicol, did not cause hemolysis, and exhibited antimicrobial and plant phenolics metabolizing activities. The genetic determinants of bile tolerance, cell-adhesion, bacteriocins production, riboflavin and folate biosynthesis, plant polyphenols utilization, and exopolysaccharide production were found in both the strains. One of the strains contained a large number of unique genes while the other had a simultaneous presence of glucansucrase and fructansucrase genes which is a rare trait in L. plantarum. Comparative genome analysis of 149 L. plantarum strains highlighted high variation in the cell-adhesion and sugar metabolism genes while the genomic regions for some other properties were relatively conserved. This work highlights the unique properties of our strains along with the probiotic and technically important genomic features of a large number of L. plantarum strains.
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Affiliation(s)
- Sarvesh Surve
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Lavale, Pune, 412115, India.,Molecular and Cellular Biology Program, Dartmouth College, Hanover, NH, 03755, USA
| | - Dasharath B Shinde
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Lavale, Pune, 412115, India
| | - Ram Kulkarni
- Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Lavale, Pune, 412115, India.
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7
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SO JS, OH K, SHIN Y. Growth stimulation of Clostridium butyricum in the presence of Lactobacillus brevis JL16 and Lactobacillus parabuchneri MH44. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.50521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - YuJin SHIN
- Inha University, Republic of Korea; Sungkyunkwan University, Republic of Korea
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8
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Fidanza M, Panigrahi P, Kollmann TR. Lactiplantibacillus plantarum-Nomad and Ideal Probiotic. Front Microbiol 2021; 12:712236. [PMID: 34690957 PMCID: PMC8527090 DOI: 10.3389/fmicb.2021.712236] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/09/2021] [Indexed: 12/12/2022] Open
Abstract
Probiotics are increasingly recognized as capable of positively modulating several aspects of human health. There are numerous attributes that make an ideal probiotic. Lactiplantibacillus plantarum (Lp) exhibits an ecological and metabolic flexibility that allows it to thrive in a variety of environments. The present review will highlight the genetic and functional characteristics of Lp that make it an ideal probiotic and summarizes the current knowledge about its potential application as a prophylactic or therapeutic intervention.
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Affiliation(s)
| | - Pinaki Panigrahi
- Georgetown University Medical Center, Department of Pediatrics, Washington, DC, United States
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9
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Baig MA, Turner MS, Liu SQ, Al-Nabulsi AA, Shah NP, Ayyash MM. Potential Probiotic Pediococcus pentosaceus M41 Modulates Its Proteome Differentially for Tolerances Against Heat, Cold, Acid, and Bile Stresses. Front Microbiol 2021; 12:731410. [PMID: 34721329 PMCID: PMC8548654 DOI: 10.3389/fmicb.2021.731410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 09/13/2021] [Indexed: 01/01/2023] Open
Abstract
Probiotics containing functional food confer health benefits in addition to their nutritional properties. In this study, we have evaluated the differential proteomic responses of a potential novel probiotic Pediococcus pentosaceus M41 under heat, cold, acid, and bile stress conditions. We identified stress response proteins that could provide tolerances against these stresses and could be used as probiotic markers for evaluating stress tolerance. Pediococcus pentosaceus M41 was exposed for 2 h to each condition: 50°C (heat stress), 4°C (cold stress), pH 3.0 (acid stress) and 0.05% bile (bile stress). Proteomic analysis was carried out using 2D-IEF SDS PAGE and LC-MS/MS. Out of 60 identified proteins, 14 upregulated and 6 downregulated proteins were common among all the stress conditions. These proteins were involved in different biological functions such as translation-related proteins, carbohydrate metabolism (phosphoenolpyruvate phosphotransferase), histidine biosynthesis (imidazole glycerol phosphate synthase) and cell wall synthesis (tyrosine-protein kinase CapB). Proteins such as polysaccharide deacetylase, lactate oxidase, transcription repressor NrdR, dihydroxyacetone kinase were upregulated under three out of the four stress conditions. The differential expression of these proteins might be responsible for tolerance and protection of P. pentosaceus M41 against different stress conditions.
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Affiliation(s)
- Mohd Affan Baig
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Mark S. Turner
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Shao-Quan Liu
- Department of Food Science and Technology, Faculty of Science, National University of Singapore, Singapore, Singapore
| | - Anas A. Al-Nabulsi
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid, Jordan
| | - Nagendra P. Shah
- Food and Nutritional Science, School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, SAR China
| | - Mutamed M. Ayyash
- Department of Food Science, College of Agriculture and Veterinary Medicine, United Arab Emirates University, Al Ain, United Arab Emirates
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10
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Managa MG, Akinola SA, Remize F, Garcia C, Sivakumar D. Physicochemical Parameters and Bioaccessibility of Lactic Acid Bacteria Fermented Chayote Leaf ( Sechium edule) and Pineapple ( Ananas comosus) Smoothies. Front Nutr 2021; 8:649189. [PMID: 33898502 PMCID: PMC8058202 DOI: 10.3389/fnut.2021.649189] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/02/2021] [Indexed: 12/27/2022] Open
Abstract
In this study, popularly consumed traditional chayote leaves and locally produced pineapple fruit were used to develop a fermented smoothie using lactic acid bacteria (LAB) strains: Lactobacillus plantarum (L75), Weissella cibaria (W64), and their combination (LW64 + 75). The physicochemical parameters [pH, total soluble solids (TSS), and color], total phenols, and carotenoid contents of the smoothies fermented for 48 h and stored for 7 days at 4°C were compared with the unfermented (control) smoothies. Results indicated that LAB fermentation reduced the pH from 3.56 to 2.50 after 48 h (day 2) compared with the non-fermented smoothie at day 2 (pH 3.37). LAB strain L75 significantly reduced the TSS content of the smoothies to 13.06°Bx after 2 days of fermentation. Smoothies fermented by L75 showed overall acceptability after 7 days of storage compared with the non-fermented puree on day 0. The LW64 + 75 significantly reduced the color change (ΔE), which was similar to the control. L75 increased the phenolic content, and W64 enhanced the total carotenoid content of the smoothies after 2 days of fermentation compared with other treatments. The use of an in vitro model simulating gastrointestinal (GI) digestion showed that fermentation with L75 improved the total phenol recovery by 65.96% during the intestinal phase compared with the control. The dialysis phase mimicked an epithelial barrier, and 53.58% of the recovered free soluble are bioavailable from the L75 fermented smoothies compared with the control. The antioxidant capacity of dialyzable fraction of the L75 fermented smoothie was significantly higher than that of the control and smoothies fermented with W64 or LW64 + 75.
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Affiliation(s)
- Millicent G Managa
- Phytochemical Food Network Research Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria, South Africa
| | - Stephen A Akinola
- Phytochemical Food Network Research Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria, South Africa
| | - Fabienne Remize
- QualiSud, Université de La Réunion, CIRAD, Université Montpellier, Montpellier SupAgro, Université d'Avignon, Sainte Clotilde, France
| | - Cyrielle Garcia
- QualiSud, Université de La Réunion, CIRAD, Université Montpellier, Montpellier SupAgro, Université d'Avignon, Sainte Clotilde, France
| | - Dharini Sivakumar
- Phytochemical Food Network Research Group, Department of Crop Sciences, Tshwane University of Technology, Pretoria, South Africa
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11
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Mbye M, Baig MA, AbuQamar SF, El-Tarabily KA, Obaid RS, Osaili TM, Al-Nabulsi AA, Turner MS, Shah NP, Ayyash MM. Updates on understanding of probiotic lactic acid bacteria responses to environmental stresses and highlights on proteomic analyses. Compr Rev Food Sci Food Saf 2020; 19:1110-1124. [PMID: 33331686 DOI: 10.1111/1541-4337.12554] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/22/2020] [Accepted: 02/25/2020] [Indexed: 12/15/2022]
Abstract
Probiotics are defined as live microorganisms that improve the health of the host when administered in adequate quantities. Nonetheless, probiotics encounter extreme environmental conditions during food processing or along the gastrointestinal tract. This review discusses different environmental stresses that affect probiotics during food preparation, storage, and along the alimentary canal, including high temperature, low temperature, low and alkaline pH, oxidative stress, high hydrostatic pressure, osmotic pressure, and starvation. The understanding of how probiotics deal with environmental stress and thrive provides useful information to guide the selection of the strains with enhanced performance in specific situations, in food processing or during gastrointestinal transit. In most cases, multiple biological functions are affected upon exposure of the cell to environmental stress. Sensing of sublethal environmental stress can allow for adaptation processes to occur, which can include alterations in the expression of specific proteins.
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Affiliation(s)
- Mustapha Mbye
- Department of Food, Nutrition and Health, College of Food and Agriculture, United Arab Emirates University (UAEU), Al Ain, 15551, UAE
| | - Mohd Affan Baig
- Department of Food, Nutrition and Health, College of Food and Agriculture, United Arab Emirates University (UAEU), Al Ain, 15551, UAE
| | - Synan F AbuQamar
- Department of Biology, College of Science, United Arab Emirates University (UAEU), Al Ain, UAE
| | - Khaled A El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University (UAEU), Al Ain, UAE.,Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University (UAEU), Al-Ain, UAE.,College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia, Australia
| | - Reyad S Obaid
- Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, Sharjah, UAE
| | - Tareq M Osaili
- Department of Clinical Nutrition and Dietetics, College of Health Sciences, University of Sharjah, Sharjah, UAE.,Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid, Jordan
| | - Anas A Al-Nabulsi
- Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid, Jordan
| | - Mark S Turner
- School of Agriculture and Food Sciences, the University of Queensland (UQ), Brisbane, Queensland, Australia
| | - Nagendra P Shah
- Food and Nutritional Science, School of Biological Sciences, the University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Mutamed M Ayyash
- Department of Food, Nutrition and Health, College of Food and Agriculture, United Arab Emirates University (UAEU), Al Ain, 15551, UAE
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12
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Li M, Wang Y, Cui H, Li Y, Sun Y, Qiu HJ. Characterization of Lactic Acid Bacteria Isolated From the Gastrointestinal Tract of a Wild Boar as Potential Probiotics. Front Vet Sci 2020; 7:49. [PMID: 32118070 PMCID: PMC7026679 DOI: 10.3389/fvets.2020.00049] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/20/2020] [Indexed: 01/11/2023] Open
Abstract
Lactic acid bacteria (LAB) are major microorganisms used for probiotic purposes and prime parts of the human and mammalian gut microbiota, which exert important health-promoting effects on the host. The present study aimed to evaluate and compare the probiotic potential and safety of LAB strains isolated from the gastrointestinal tract of a wild boar from the Greater Khingan Mountains, China. Amongst all of the isolated LAB strains, five isolates identified as Lactobacillus mucosae, Lactobacillus salivarius, Enterococcus hirae, Enterococcus durans, and Enterococcus faecium, were remarkably resistant to acid and bile salt. The probiotic characteristics (including adhesion capability, antimicrobial activities, autoaggregation, and coaggregation abilities), and safety properties (including hemolytic activity, antibiotic resistance, absence/presence of virulence factors, and in vivo safety) were evaluated. The results showed that all five isolates exhibited high adhesive potential, remarkable aggregation capacity, and antibacterial activities. Upon assessment of the safety, these strains were negative for hemolytic activity and all tested virulence genes. In vivo safety assessment showed no adverse effects of isolated strains supplementation on the body weight gain and organ indices of the treated mice. This study revealed that these LAB isolates, especially L. salivarius M2-71, possess desirable probiotic properties and have great potentials for the development of feed additives for animals to promote health.
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Affiliation(s)
- Miao Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yi Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hongyu Cui
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yongfeng Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yuan Sun
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Hua-Ji Qiu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
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13
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Prokaryotic communities in multidimensional bottom-pit-mud from old and young pits used for the production of Chinese Strong-Flavor Baijiu. Food Chem 2019; 312:126084. [PMID: 31901820 DOI: 10.1016/j.foodchem.2019.126084] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/18/2019] [Accepted: 12/18/2019] [Indexed: 01/21/2023]
Abstract
The pit mud (PM) prokaryotic communities with obvious difference between old and young PM is essential for solid-fermentation of Chinese Strong-Flavor Baijiu. The bottom-PM (BPM) is considered more important. In this study, the multidimensional prokaryotic communities of old and young BPMs were investigated. The old BPM presented stratified difference within the depth of 0-7 cm, especially, the surface 0-1 cm was characteristic of dominant Caproiciproducens (34.79%). The young BPM showed significant difference between quarter/center and deep corner (1-7 cm), the former were characteristic of abundant Lactobacillus (12.80%-42.72%), while the deep corner was distinctive of dominant Caproiciproducens (17.85%-64.45%). The lactic acid, pH and soluble Ca2+ were considered as the 3 most significant environmental factors through redundancy analysis (RDA). This study may help illuminate the BPM aging process, and allow the future artificial regulation of young BPM.
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14
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Spangler JR, Dean SN, Leary DH, Walper SA. Response of Lactobacillus plantarum WCFS1 to the Gram-Negative Pathogen-Associated Quorum Sensing Molecule N-3-Oxododecanoyl Homoserine Lactone. Front Microbiol 2019; 10:715. [PMID: 31024494 PMCID: PMC6459948 DOI: 10.3389/fmicb.2019.00715] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/21/2019] [Indexed: 12/18/2022] Open
Abstract
The bacterial quorum sensing phenomenon has been well studied since its discovery and has traditionally been considered to include signaling pathways recognized exclusively within either Gram-positive or Gram-negative bacteria. These groups of bacteria synthesize structurally distinct signaling molecules to mediate quorum sensing, where Gram-positive bacteria traditionally utilize small autoinducing peptides (AIPs) and Gram-negatives use small molecules such as acyl-homoserine lactones (AHLs). The structural differences between the types of signaling molecules have historically implied a lack of cross-talk among Gram-positive and Gram-negative quorum sensing systems. Recent investigations, however, have demonstrated the ability for AIPs and AHLs to be produced by non-canonical organisms, implying quorum sensing systems may be more universally recognized than previously hypothesized. With that in mind, our interests were piqued by the organisms Lactobacillus plantarum, a Gram-positive commensal probiotic known to participate in AIP-mediated quorum sensing, and Pseudomonas aeruginosa, a characterized Gram-negative pathogen whose virulence is in part controlled by AHL-mediated quorum sensing. Both health-related organisms are known to inhabit the human gut in various instances, both are characterized to elicit distinct effects on host immunity, and some studies hint at the putative ability of L. plantarum to degrade AHLs produced by P. aeruginosa. We therefore wanted to determine if L. plantarum cultures would respond to the addition of N-(3-oxododecanoyl)-L-homoserine lactone (3OC12) from P. aeruginosa by analyzing changes on both the transcriptome and proteome over time. Based on the observed upregulation of various two-component systems, response regulators, and native quorum sensing related genes, the resulting data provide evidence of an AHL recognition and response by L. plantarum.
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Affiliation(s)
- Joseph R. Spangler
- National Research Council Postdoctoral Fellowships, NRC Research Associateship Programs, Washington, DC, United States
| | - Scott N. Dean
- National Research Council Postdoctoral Fellowships, NRC Research Associateship Programs, Washington, DC, United States
| | - Dagmar H. Leary
- United States Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC, United States
| | - Scott A. Walper
- United States Naval Research Laboratory, Center for Biomolecular Science and Engineering, Washington, DC, United States
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15
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Xu K, Lee YS, Li J, Li C. Resistance mechanisms and reprogramming of microorganisms for efficient biorefinery under multiple environmental stresses. Synth Syst Biotechnol 2019; 4:92-98. [PMID: 30899819 PMCID: PMC6407310 DOI: 10.1016/j.synbio.2019.02.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/01/2019] [Accepted: 02/20/2019] [Indexed: 01/14/2023] Open
Abstract
In the fermentation process of biorefinery, industrial strains are normally subjected to adverse environmental stresses, which leads to their slow growth, yield decline, a substantial increase in energy consumption, and other negative consequences, which ultimately seriously hamper the development of biorefinery. How to minimize the impact of stress on microorganisms is of great significance. This review not only reveals the damaging effects of different environmental stresses on microbial strains but also introduces commonly used strategies to improve microbial tolerance, including adaptive evolution, reprogramming of the industrial host based on genetic circuits, global transcription machinery engineering (gTME) and bioprocess integration. Furthermore, by integrating the advantages of these strategies and reducing the cost of system operation, the tolerance of industrial strains, combined with production efficiency and process stability, will be greatly improved, and the development prospects of biorefinery will be more widespread.
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Affiliation(s)
- Ke Xu
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China.,Key Lab for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China
| | - Yun Seo Lee
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Jun Li
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Chun Li
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China
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16
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Aristimuño Ficoseco C, Mansilla FI, Maldonado NC, Miranda H, Fátima Nader-Macias ME, Vignolo GM. Safety and Growth Optimization of Lactic Acid Bacteria Isolated From Feedlot Cattle for Probiotic Formula Design. Front Microbiol 2018; 9:2220. [PMID: 30323790 PMCID: PMC6172481 DOI: 10.3389/fmicb.2018.02220] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/30/2018] [Indexed: 01/08/2023] Open
Abstract
In order to eliminate the widespread use of antibiotics in livestock production, the research for alternatives has increased lately. This study examined the safety of 40 lactic acid bacteria (LAB) isolated from bovine feedlot environment and previously selected as potential probiotics. A high sensitivity prevalence to ampicillin (AMP, 100%), gentamicin (GEN, 96.3%), kanamycin (KAN, 96.3%), clindamycin (CLI, 85.2%), chloramphenicol (CHL, 92.6%) and streptomycin (STR, 88.9%) while moderate and high resistance against erythromycin (ERY, 48%) and tetracycline (TET, 79%) respectively, were determined. Feedlot enterococci and pediococci displayed high resistance to CLI, ERY, GEN and TET (73, 100, 54.5, and 73%, respectively). Among fifteen resistance genes investigated, seven were identified in lactobacilli; their presence not always was correlated with phenotypic resistance. STR resistance genes, aadA and ant(6) were observed in 7.4 and 3.7% of isolates, respectively; genes responsible for aminoglycosides resistance, such as bla (7.4%), and aph(3”)-III (3.7%) were also recognized. In addition, resistance cat and tetS genes (3.7 and 7.4%, respectively) were harbored by feedlot lactobacilli strains. The presence of ermB gene in 22.3% of isolates, including two of the six strains phenotypically resistant to ERY, exhibited the highest prevalence among the assessed antibiotics. None of the feedlot lactobacilli harbored virulence factors genes, while positive PCR amplification for ace, agg, fsrA, and atpA genes was found for enterococci. With the objective of producing large cell biomass for probiotic delivery, growth media without peptone but containing glucose and skim milk powder (Mgl and Mlac) were selected as optimal. Lactobacillus acidophilus CRL2074, L. amylovorus CRL2115, L. mucosae CRL2069, and L. rhamnosus CRL2084 were strains selected as free of antibiotic resistance and virulence determinants, able to reach high cell numbers in non-expensive culture media and being compatible among them.
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Affiliation(s)
- Cecilia Aristimuño Ficoseco
- Centro de Referencia para Lactobacilos, Consejo Nacional de Investigaciones Científicas y Técnicas, San Miguel de Tucuman, Argentina
| | - Flavia I Mansilla
- Centro de Referencia para Lactobacilos, Consejo Nacional de Investigaciones Científicas y Técnicas, San Miguel de Tucuman, Argentina
| | - Natalia C Maldonado
- Centro de Referencia para Lactobacilos, Consejo Nacional de Investigaciones Científicas y Técnicas, San Miguel de Tucuman, Argentina
| | - Hortencia Miranda
- Centro de Referencia para Lactobacilos, Consejo Nacional de Investigaciones Científicas y Técnicas, San Miguel de Tucuman, Argentina
| | - María E Fátima Nader-Macias
- Centro de Referencia para Lactobacilos, Consejo Nacional de Investigaciones Científicas y Técnicas, San Miguel de Tucuman, Argentina
| | - Graciela M Vignolo
- Centro de Referencia para Lactobacilos, Consejo Nacional de Investigaciones Científicas y Técnicas, San Miguel de Tucuman, Argentina
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17
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Srisukchayakul P, Charalampopoulos D, Karatzas KA. Study on the effect of citric acid adaptation toward the subsequent survival of Lactobacillus plantarum NCIMB 8826 in low pH fruit juices during refrigerated storage. Food Res Int 2018; 111:198-204. [PMID: 30007676 DOI: 10.1016/j.foodres.2018.05.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 05/05/2018] [Accepted: 05/08/2018] [Indexed: 01/16/2023]
Abstract
Pre-treatment of stationary phase cells of Lactobacillus plantarum NCMIB 8826 with citric acid (pH 3 to 6) for a short period of time significantly improved subsequent cell survival in several highly acidic fruit juices namely cranberry (pH 2.7), pomegranate (pH 3.5), and lemon & lime juices (pH 2.8). Although the mechanism for this adaptation is still unclear, the analysis of the cellular fatty acid content of acid adapted cells and the reverse transcription polymerase chain reaction (RT-PCR) showed a significant increase (by ~1.7 fold) of the cellular cyclopropane fatty acid, cis-11,12-methylene octadecanoic acid (C19:0cyclow7c) and a significant upregulation (~12 fold) of cyclopropane synthase (cfa) were observed, respectively, during acid adaptation. It is likely that these changes led to a decrease in membrane fluidity and to lower membrane permeability, which prevents the cells from proton influx during storage in these low pH fruit juices.
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Affiliation(s)
- Pornpoj Srisukchayakul
- Department of Food and Nutritional Sciences, University of Reading, PO Box 226, Whiteknights, Reading RG6 6AP, United Kingdom
| | - Dimitris Charalampopoulos
- Department of Food and Nutritional Sciences, University of Reading, PO Box 226, Whiteknights, Reading RG6 6AP, United Kingdom
| | - Kimon Andreas Karatzas
- Department of Food and Nutritional Sciences, University of Reading, PO Box 226, Whiteknights, Reading RG6 6AP, United Kingdom; CINN (Centre for Integrative Neuroscience and Neurodynamics), University of Reading, Whiteknights, Reading RG6 6BE, United Kingdom.
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18
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Zhang D, Wu M, Guo Y, Xun M, Wang W, Wu Z, Pan D. Purification of Lactobacillus acidophilus surface-layer protein and its immunomodulatory effects on RAW264.7 cells. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:4204-4209. [PMID: 28244103 DOI: 10.1002/jsfa.8294] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 02/14/2017] [Accepted: 02/21/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Surface-layer proteins (SLP) have been found in the outermost layer of the cell wall in many types of lactobacillus are considered to be an important factor with respect to intestinal immunity. RESULTS The present study compared the effects of SLP extracted by different concentrations of LiCl and carbamide, and subsequently identified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, circular dichroism and differential scanning calorimetry. Furthermore, RAW 264.7 cells were used to evaluate the immunomodulatory effects of SLP. SLP were derived from Lactobacillus acidophilus CICC6074 with a molecular weight of 46 kDa, and consisted of 16.9% α-helix, 42.3% β-sheet, 20.8% β-turns and 22.5% random coils. SLP promoted NO secretion and higher quantities of NO were produced as the SLP concentrations increased. SLP concentrations over 50 µg mL-1 significantly decreased the amount of tumor necrosis factor-α secreted by RAW264.7 cells. CONCLUSION SLP can trigger immunomodulatory effects in RAW 264.7 cells. This provides crucial information that will enable the further use of L. acidophilus in food, medicine and other products. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Dandan Zhang
- Department of Food Science & Nutrition, Ginling College, Nanjing Normal University, Nanjing, PR China
| | - Mengting Wu
- Department of Food Science & Nutrition, Ginling College, Nanjing Normal University, Nanjing, PR China
| | - Yuxing Guo
- Department of Food Science & Nutrition, Ginling College, Nanjing Normal University, Nanjing, PR China
| | - Mingyue Xun
- Department of Food Science & Nutrition, Ginling College, Nanjing Normal University, Nanjing, PR China
| | - Wenwen Wang
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, PR China
| | - Zhen Wu
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, PR China
| | - Daodong Pan
- Department of Food Science & Nutrition, Ginling College, Nanjing Normal University, Nanjing, PR China
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang, Marine Science School, Ningbo University, Ningbo, Zhejiang, PR China
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19
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Effects of a probiotic product containing Bifidobacterium animalis subsp. animalis IM386 and Lactobacillus plantarum MP2026 in lactose intolerant individuals: Randomized, placebo-controlled clinical trial. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.05.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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20
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Generation of Lactobacillus plantarum strains with improved potential to target gastrointestinal disorders related to sugar malabsorption. Food Res Int 2017; 94:45-53. [DOI: 10.1016/j.foodres.2017.01.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/06/2017] [Accepted: 01/25/2017] [Indexed: 12/14/2022]
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21
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Nguyen HT, Truong DH, Kouhoundé S, Ly S, Razafindralambo H, Delvigne F. Biochemical Engineering Approaches for Increasing Viability and Functionality of Probiotic Bacteria. Int J Mol Sci 2016; 17:E867. [PMID: 27271598 PMCID: PMC4926401 DOI: 10.3390/ijms17060867] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 05/17/2016] [Accepted: 05/18/2016] [Indexed: 01/02/2023] Open
Abstract
The literature presents a growing body of evidence demonstrating the positive effect of probiotics on health. Probiotic consumption levels are rising quickly in the world despite the fluctuation of their viability and functionality. Technological methods aiming at improving probiotic characteristics are thus highly wanted. However, microbial metabolic engineering toolbox is not available for this kind of application. On the other hand, basic microbiology teaches us that bacteria are able to exhibit adaptation to external stresses. It is known that adequately applied sub-lethal stress, i.e., controlled in amplitude and frequency at a given stage of the culture, is able to enhance microbial robustness. This property could be potentially used to improve the viability of probiotic bacteria, but some technical challenges still need to be overcome before any industrial implementation. This review paper investigates the different technical tools that can be used in order to define the proper condition for improving viability of probiotic bacteria and their implementation at the industrial scale. Based on the example of Bifidobacterium bifidum, potentialities for simultaneously improving viability, but also functionality of probiotics will be described.
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Affiliation(s)
- Huu-Thanh Nguyen
- Natural Products and Industrial Biochemistry Research Group (NPIB), Faculty of Applied Sciences, Ton Duc Thang University, 19 Nguyen Huu Tho, Tan Phong Ward, District 7, 700000 Ho Chi Minh City, Vietnam.
- Microbial Processes and Interactions (MiPI), Agro-biochem Department, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium.
| | - Dieu-Hien Truong
- Faculty of Applied Sciences, Ton Duc Thang University, 19 Nguyen Huu Tho, Tan Phong Ward, District 7, 700000 Ho Chi Minh City, Vietnam.
| | - Sonagnon Kouhoundé
- Microbial Processes and Interactions (MiPI), Agro-biochem Department, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium.
| | - Sokny Ly
- Microbial Processes and Interactions (MiPI), Agro-biochem Department, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium.
| | - Hary Razafindralambo
- Food technology and Formulation, Agro-Biochem Department, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium.
| | - Frank Delvigne
- Microbial Processes and Interactions (MiPI), Agro-biochem Department, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium.
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